Magnesium oxide Calculate the amount of heat energy (q) in kJ that was absorbed by the surroundings, calorimeter and water, for each sub-reaction. Use 1.01 g/mL for the density of the HCl solutions. Use the specific heat of water, 4.184 J/(g·°C), for all solutions. The calorimeter constant is 25.5 J/°C.

Why are graphs useful when interpreting data

Which statement correctly describes the current in a circuit that is made up of any two resistors connected in parallel with a battery? a. the current in the battery and in each resistor is the same b. the current the battery equals to the sum of the currents in the resistors c. the current in the battery is less than the current in either resistor d. the current in the battery equals to the product of the currents in the resistors

The period of a pendulum varies directly as the square root of the length of the pendulum and inversely as the square root of the acceleration due to gravity. find the period when the length is 144 cm and the acceleration due to gravity is 980 cm per second squared, if the period is 7pi seconds when the length is 289 cm and the acceleration due to gravity is 980 cm per second squared.